no, the code is not there, jasperreports-functionos has this package: netsfjasperreportsfunctionsstandard that is not included in src folder of jasperreports-6.5.0-project.zip But it is included in jasperreports-6.5.0demosamplesfunctionssrcnetsfjasperreportsfunctionsstandardDateTimeCategory.java And there is a maven pom there: jasperreports-6.5.0demosamplesfunctionspom.xml Thanks